Improvement in rotating cylinder-engines



v 2 Sheets-S t 1' R-L-COHEN' `ROTATINGCYLINDER ENGINB. No. 1 12,688. Patentd Mar. 14,41871.

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s R. L. COHEN.

OTATING CYLINDER BNGINE.

Patented Mar. 14, 1871.

2 Sheets-sheet 2.

ROBERT LIVINesTonooHEN; OF PHILADELPHIA, ASSIGNOR TO HIM- SELF AND WILLIAM L; LANOE, or PLYMOUTH, PENNSYLVANIA.

Ietters Patent No. 112,(388, datefl March 14, 1871; antedated March 3, 1871.

IMPRQVEMENT IN ROTATlNG CVLlNDER-ENGINES.

'.t'he Schedue jreerred to in these Letters Patent and making part of the same.

I, ROBERT Lrvmesrrov Conan, of Philadelphia, :onnty of Philadelphia, State of Pennsylvania, have i inventecl certain Improvements in Rotary Oylinderu Enginee, of which the following is a specification.

* Nam re and Object of the intention. "My invention relates to that class of engines in j i which a cyliuder revolves on an axis eccentric with that on which the fly-wheel shaft revolves, and my invention consists of certaingimprovements, fully y i described hereafter; whereby` the constrnction and i operationuof the engine are greatly simplified.

.Desc'rigjtrion` of the Accompany ing Drwing.

y i y\ Eigre 1, drawing No. 1,`is a plan view of a rotary cyhnder-engne with' my improvements;

Figura 2, a vertical section on the line 1 -2, fig. 1; Fgure 3; a sectional plan onthe line 3-4, fig. 2.

Fgure 4, drawing No." 2, a side View of the engine with the front bearing adlvalve removed;

Fignre 5, a vertical section on the line 5-6, fig. 2; `Fgure 6, a face view of the rotating seat oi' the Valve and Figure 'i',` a face viewyof the stationary valve.

Gene mZDescriptcn. i

A is thc stean-lcylinder of the engine, the pistonro B -of which is connected` directly to a pin, a, on

` I the rimof the fly-wheel D, the shaft dot the latter turnng n sutablc hearings on` the standards E and E', the cylindcr having a trnnnion, e, turning in and projecting through the hearing ;fof the standard F. i i w i The center of this trnnnion is in the same veri tical line as the center of the shatt ll, and the dis-` i tance between these `centers is equal to half the stroke of the piston, the engine to which ny imj provements are applied being essentially a crankengine, although the cylinder 'otates with-the flyi wheel `shaft, but on an axis eccentric with that of the fly-wheel, the distance between the axis of the cylinder and that of the fiy-wheelfbeing equal to the I length of the crankor level: throngh whieh the press- `ure of the steam is exerted to tirn the shaft d.

On the bearing f of the cylinder s trnnnion is a `srnall cletfb, witli which connunicatcs the steani `ppe d the chest containing a valve, m, which may be adjnsted by a level', h, as shown in ig. 5, or by i any other suitable appliances,` so as to expose or cover one or other of the vertical ports i i' forned in i\ i the hearing f, or to close both ports. i

The vertical port t' commnnicates with a horizontalpassage, j, and the port t'wjith the horizontal passage 3', and these passages terminate in the porte aa and 'n' of the stationary valve-face k, formed by' the end of the hearing f, in which face is also' the cxhaust-port q, commnnicating through a passage in 'the stationary valve-face lt; this I accomplish by means of a taper-key, v, adapted to a slot in the trunnion e, and hearing against a Washer, x, which fits snugly against the outcr end of the hearing f, this key being held in place and. rendered so adj nstab1e,by a set-screw, y, that by a slight turn of the latterthe face 13 of the cylinder can be brought to bear in such close contact with that of the stationary valve as to insnre a 'night-joint without causing suliieient friction to det'act from the power ot' the engine.

When the engine is in operation steam passes to the cylinder through one only of the port-s and n', the other port being closed by the adjstnent of the valve m, and these two ports are so a'anged in respect to each other and to the ports in the face poi' the cylinder, that when the steam has a free passage through one `port the cylinder with the fly-wheel will revolve in one direction, but in a contrary direction when the steam passes through the other port; the movement of the engine can consequently be reversed by the simple adj ustnent of the valve.

When an engine is required to turn a shaft in one direction only, one of the' ports u or n' and its passage, and-consequently the valve m, may be dispensed with. i

The ports tandin' are also so arranged in respect to those of the cylinderthat steam is admitted to the latter during a portion only of the stroke, no matter which of the said porte u or n' the stean passes through; the exhaust-port q, howcver, is so arranged as to afford a free` passage of the steam from the cyl inder during an entire stroke.

` Engines with 'otarycylinders havelong been known,

but although simple and cheap in Construction, and occupying comparativelylittlc space, they have been for the most part (liscarded by practical egincers, owing, it is believed, to the inperfect valve appliauces with which they have been hitherto furnished, and to the want of simple devices i'or reversing.

Practical tests have proved that, by the above-described valve system and arrangement ot' stean and 1. In a, ro'ml'y engine, consisting of a. cylinde' supported in a t'unnio eccentrc to the shzfb of a flywheel, to a. pin on which the piston-rod is connected, the combi u af ports 'w w' in the face of the cybiuder with zu swamqorb n and exlzust-port q in the bem-ing, *when the said ports m'e m''zmgcd :s cszribed.

2. The slotted trnnniou a and bem-ing f, in combination with the Washer x, key u, set-screw y, and pul lay G, :m set fo'th.

In testimony whereof I hare signed my name to this specification iu the presence of two subscribing witnesses.

ROBERT LIVINGSTON GOHEN.

witnesses:

. Emmy SMITH, WM, A. STEEL. 

